RTR Terminology
Figure 1–6 Two-Tier Client/Server Environment
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Application Presentation | ||||||||
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and Business Logic |
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Figure 1–7 Three-Tier Client/Server Environment
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Presentation/ | Application Server/ Database Server |
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User Interface | Business Logic | |
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RTR provides a multicomponent software model where clients running on frontends, routers, and servers running on backends cooperate to provide reliable service and transactional integrity. Application users interact with the client (presentation layer) on the frontend node that forwards messages to the current router. The router in turn routes the messages to the current, appropriate backend, where server applications reside, for processing. The connection to the current router is maintained until the current router fails or connections to it are lost.
Introduction
